Basler Electric DECS-250N - Manual (Page 357)

9440500990 Rev D 341
DECS-250N Contact Expansion Module
Figure 188. CEM-2020H Overall Dimensions
Connections
Contact Expansion Module connections are dependent on the application. Incorrect wiring may result in
damage to the module.
Note
Operating power from the battery must be of the correct polarity.
Although reverse polarity will not cause damage, the CEM-2020 will
not operate.
Be sure that the CEM-2020 is hard-wired to earth ground with no
smaller than 12 AWG copper wire attached to the chassis ground
terminal on the module.
Terminations
The terminal interface consists of plug-in connectors with screw-down compression terminals.
CEM-2020 connections are made with one 5-position connector, two 18-position connectors, and two 24-
position connectors with screw-down compression terminals. These connectors plug into headers on the
CEM-2020. The connectors and headers have dovetailed edges that ensure proper connector orientation.
Also, the connectors and headers are uniquely keyed to ensure that the connectors mate only with the
correct headers.
Connectors and headers may contain tin- or gold-plated conductors. Tin-plated conductors are housed in
a black plastic casing and gold-plated conductors are housed in an orange plastic casing. Mate
connectors to headers of the same color only.